The utility of cystatin C—a protein biomarker similar to creatinine—has often been overlooked in routine practice as an alternative measurement of estimated glomerular filtration rate (eGFR) in patients with kidney disease.

Corey Diamond, PharmD

Pulse oximeters send beams of light through the skin to measure the amount of oxygen in the blood. Health care providers who rely on the technology have long known that the tool can yield inaccurate readings for people with darker skin.

Sonya Collins

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